Transaction not yet indexed

ffmX51h7CA29gYned8bFT9k5FUqvvpWvEHrC254uFbWTiFgoCgP4Q8pkCFZnFaJabFSHEWQqJkk6zgT9grRNMY4

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.